Multiple vulnerabilities in OpenVPN server for Windows
| Risk | Medium |
| Patch available | YES |
| Number of vulnerabilities | 4 |
| CVE-ID | CVE-2024-27459 CVE-2024-24974 CVE-2024-27903 CVE-2024-1305 |
| CWE-ID | CWE-121 CWE-284 CWE-426 CWE-190 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software Subscribe |
OpenVPN Server applications / Remote access servers, VPN |
| Vendor | openvpn.net |
Security Bulletin
This security bulletin contains information about 4 vulnerabilities.
1) Stack-based buffer overflow
EUVDB-ID: #VU87675
Risk: Low
CVSSv3.1: 6.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2024-27459
CWE-ID:
CWE-121 - Stack-based buffer overflow
Exploit availability: No
DescriptionThe vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a boundary error within the interactive service component. A local user can trigger a stack-based buffer overflow and execute arbitrary code with elevated privileges.
The vulnerability affects Windows installations only.
Install updates from vendor's website.
Vulnerable software versionsOpenVPN: 2.0 - 2.6.9
External linkshttp://github.com/OpenVPN/openvpn/releases/tag/v2.6.10
http://github.com/OpenVPN/openvpn/releases/tag/v2.5.10
Q & A
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
How the attacker can exploit this vulnerability?
The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.
The attacker would have to login to the system and perform certain actions in order to exploit this vulnerability.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
2) Improper access control
EUVDB-ID: #VU87676
Risk: Medium
CVSSv3.1: 4.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2024-24974
CWE-ID:
CWE-284 - Improper Access Control
Exploit availability: No
DescriptionThe vulnerability allows a remote user to gain unauthorized access to otherwise restricted functionality.
The vulnerability exists due to improper access restrictions to the interactive service pipe. A remote user can bypass implemented security restrictions and gain unauthorized access to the application.
The vulnerability affects Windows installations only.
Install updates from vendor's website.
Vulnerable software versionsOpenVPN: 2.0 - 2.6.9
External linkshttp://github.com/OpenVPN/openvpn/releases/tag/v2.6.10
http://github.com/OpenVPN/openvpn/releases/tag/v2.5.10
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.
How the attacker can exploit this vulnerability?
The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
3) Untrusted search path
EUVDB-ID: #VU87677
Risk: Low
CVSSv3.1: 6.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2024-27903
CWE-ID:
CWE-426 - Untrusted Search Path
Exploit availability: No
DescriptionThe vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to usage of an untrusted search path in plugins. A local user can place a malicious binary into a specific location on the system and execute arbitrary code with escalated privileges.
The vulnerability affects Windows installations only.
Install updates from vendor's website.
Vulnerable software versionsOpenVPN: 2.0 - 2.6.9
External linkshttp://github.com/OpenVPN/openvpn/releases/tag/v2.6.10
http://github.com/OpenVPN/openvpn/releases/tag/v2.5.10
Q & A
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
How the attacker can exploit this vulnerability?
The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.
The attacker would have to login to the system and perform certain actions in order to exploit this vulnerability.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
4) Integer overflow
EUVDB-ID: #VU87678
Risk: Low
CVSSv3.1: 6.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2024-1305
CWE-ID:
CWE-190 - Integer overflow
Exploit availability: No
DescriptionThe vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to integer overflow in !TapSharedSendPacket within the Windows TAP driver. A local user can trigger integer overflow and execute arbitrary code with elevated privileges.
Install updates from vendor's website.
Vulnerable software versionsOpenVPN: 2.0 - 2.6.9
External linkshttp://github.com/OpenVPN/openvpn/releases/tag/v2.6.10
http://github.com/OpenVPN/openvpn/releases/tag/v2.5.10
Q & A
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
How the attacker can exploit this vulnerability?
The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.
The attacker would have to login to the system and perform certain actions in order to exploit this vulnerability.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
